What causes itchy skin on the outside of the nose?

Itching on the skin outside the nose may have various causes, mainly including: 1. Dry environment: when the environment is excessively dry, the skin tends to lose moisture, leading to dryness and itching. 2. Allergic reactions: responses to allergens in the air such as pollen, dust mites, and animal dander may cause itching on the external area of the nose. 3. Skin conditions: inflammatory skin disorders such as eczema, folliculitis, or seborrheic dermatitis may lead to symptoms like redness, swelling, and itching on the skin around the nose. 4. Insect bites or contact dermatitis: bites from insects or contact with irritants (such as chemicals or fragrances) can also trigger skin itching. If persistent itching on the outer nose affects daily life, it is advisable to seek medical attention promptly.